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@ -1,152 +1,537 @@ |
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/**
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****************************************************************************** |
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* @file w25qxx.c |
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* @brief W25Q 系列 SPI NOR Flash 驱动(H7 QUADSPI / F4 SPI 双传输层) |
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* |
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* 本文件通过宏 W25QXX_USE_QSPI / W25QXX_USE_SPI 在同一套源码中同时支持 |
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* 两种传输层: |
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* |
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* - W25QXX_USE_QSPI(STM32H7): |
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* 基于参考工程 robot/project_old/paint_robot_old/BASE/Src/BSP/ |
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* bsp_qspi_w25q128.c(在 H7 下工作正常)移植而来,使用 CubeMX 生成 |
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* 的 QUADSPI 外设句柄 hqspi,指令/地址/数据均采用 1-Line(SPI 兼容 |
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* 时序),不依赖 QE 位,读写擦稳定可靠。 |
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* - W25QXX_USE_SPI(STM32F4 等): |
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* 原正点原子经典 SPI 驱动,依赖 bsp 中定义的 W25QXXSPI 与 W25QXX_CS_x。 |
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* |
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* 对外 API 两种传输层完全一致,可与 robot/library/littlefs/lfs_flashbd.c |
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* 无缝接驳: |
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* W25QXX_Init / W25QXX_Read / W25QXX_Write_NoCheck |
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* W25QXX_Erase_Sector(入参为扇区号,内部 ×4096) / W25QXX_Wait_Busy |
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****************************************************************************** |
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*/ |
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#include "w25qxx.h" |
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#include "w25qxx.h" |
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#ifdef USE_W25QXX |
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/* 当前芯片型号,默认 W25Q80(两种传输层共用) */ |
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uint16_t W25QXX_TYPE = W25Q80; |
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/* ===========================================================================
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* STM32H7 QUADSPI 传输层 |
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* =========================================================================*/ |
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#if defined(W25QXX_USE_QSPI) |
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#include "quadspi.h" |
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/* 是否启用 4 字节地址模式(仅 W25Q256 需要) */ |
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static uint8_t s_w25qxx_4byte = 0; |
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/* 带擦除写入用的扇区缓冲 */ |
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static uint8_t W25QXX_BUFFER[W25QXX_SECTOR_SIZE]; |
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/** 填充 QSPI 命令帧的公共字段 */ |
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static void W25QXX_Command_Base(QSPI_CommandTypeDef *cmd) |
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{ |
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cmd->InstructionMode = QSPI_INSTRUCTION_1_LINE; |
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cmd->AddressSize = s_w25qxx_4byte ? QSPI_ADDRESS_32_BITS : QSPI_ADDRESS_24_BITS; |
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cmd->AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE; |
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cmd->DdrMode = QSPI_DDR_MODE_DISABLE; |
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cmd->DdrHoldHalfCycle = QSPI_DDR_HHC_ANALOG_DELAY; |
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cmd->SIOOMode = QSPI_SIOO_INST_EVERY_CMD; |
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cmd->DummyCycles = 0; |
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cmd->NbData = 0; |
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} |
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/** 仅发送一条指令(无地址、无数据),如写使能/写禁止/片擦除/复位 */ |
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static void W25QXX_CommandOnly(uint8_t instruction) |
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{ |
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QSPI_CommandTypeDef cmd = {0}; |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = instruction; |
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cmd.AddressMode = QSPI_ADDRESS_NONE; |
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cmd.DataMode = QSPI_DATA_NONE; |
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HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); |
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} |
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/** 内部:带超时的等待 Flash 空闲(自动轮询状态寄存器 bit0(BUSY) 直至为 0) */ |
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static void W25QXX_WaitBusy_Timeout(uint32_t timeout_ms) |
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{ |
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QSPI_CommandTypeDef cmd = {0}; |
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QSPI_AutoPollingTypeDef cfg = {0}; |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = W25X_ReadStatusReg1; /* 0x05 */ |
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cmd.AddressMode = QSPI_ADDRESS_NONE; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.DummyCycles = 0; |
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cfg.Match = 0x00; /* 等待 BUSY=0 */ |
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cfg.Mask = 0x01; /* 只关心 bit0 */ |
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cfg.MatchMode = QSPI_MATCH_MODE_AND; |
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cfg.StatusBytesSize = 1; |
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cfg.Interval = 0x10; |
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cfg.AutomaticStop = QSPI_AUTOMATIC_STOP_ENABLE; |
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HAL_QSPI_AutoPolling(&hqspi, &cmd, &cfg, timeout_ms); |
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} |
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/** 初始化:确保 QUADSPI 外设已初始化,软件复位 Flash 到 SPI 模式,读取型号 */ |
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void W25QXX_Init(void) |
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{ |
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/* 若 QUADSPI 尚未初始化(例如未走 main 的 MX_QUADSPI_Init),则补初始化 */ |
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if (hqspi.State == HAL_QSPI_STATE_RESET) |
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{ |
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MX_QUADSPI_Init(); |
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} |
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/* 软件复位(0x66 + 0x99),确保芯片回到已知的 SPI 模式,
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避免之前被置入 QPI 模式导致后续 1-Line 指令失效 */ |
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W25QXX_CommandOnly(W25X_ResetEnable); |
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W25QXX_CommandOnly(W25X_ResetMemory); |
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W25QXX_Wait_Busy(); |
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/* 读取芯片型号 */ |
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W25QXX_TYPE = W25QXX_ReadID(); |
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/* 仅 W25Q256 需要进入 4 字节地址模式 */ |
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s_w25qxx_4byte = 0; |
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if (W25QXX_TYPE == W25Q256) |
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{ |
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W25QXX_Write_Enable(); |
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W25QXX_CommandOnly(W25X_Enable4ByteAddr); |
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s_w25qxx_4byte = 1; |
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} |
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} |
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/** 使能 4 字节地址模式 */ |
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void W25QXX_4ByteAddr_Enable(void) |
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{ |
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W25QXX_Write_Enable(); |
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W25QXX_CommandOnly(W25X_Enable4ByteAddr); |
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s_w25qxx_4byte = 1; |
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} |
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/** 读取芯片型号 ID(Manufact/Device ID 0x90 读法,返回 0xEF17 等) */ |
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uint16_t W25QXX_ReadID(void) |
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{ |
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uint16_t temp = 0; |
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uint8_t buf[2] = {0, 0}; |
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QSPI_CommandTypeDef cmd = {0}; |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = W25X_ManufactDeviceID; /* 0x90 */ |
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cmd.AddressMode = QSPI_ADDRESS_1_LINE; |
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cmd.AddressSize = QSPI_ADDRESS_24_BITS; |
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cmd.Address = 0x000000; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.NbData = 2; |
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if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return 0; |
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} |
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if (HAL_QSPI_Receive(&hqspi, buf, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return 0; |
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} |
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temp = (uint16_t)((buf[0] << 8) | buf[1]); |
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return temp; |
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} |
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/** 读取状态寄存器(regno: 1~3) */ |
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uint8_t W25QXX_ReadSR(uint8_t regno) |
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{ |
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uint8_t command; |
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uint8_t data = 0xFF; |
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QSPI_CommandTypeDef cmd = {0}; |
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switch (regno) |
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{ |
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case 2: command = W25X_ReadStatusReg2; break; |
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case 3: command = W25X_ReadStatusReg3; break; |
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default: command = W25X_ReadStatusReg1; break; |
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} |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = command; |
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cmd.AddressMode = QSPI_ADDRESS_NONE; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.NbData = 1; |
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if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return 0xFF; |
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} |
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if (HAL_QSPI_Receive(&hqspi, &data, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return 0xFF; |
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} |
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return data; |
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} |
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/** 写状态寄存器 */ |
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void W25QXX_Write_SR(uint8_t regno, uint8_t sr) |
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{ |
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uint8_t command; |
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QSPI_CommandTypeDef cmd = {0}; |
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switch (regno) |
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{ |
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case 2: command = W25X_WriteStatusReg2; break; |
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case 3: command = W25X_WriteStatusReg3; break; |
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default: command = W25X_WriteStatusReg1; break; |
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} |
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W25QXX_Write_Enable(); |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = command; |
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cmd.AddressMode = QSPI_ADDRESS_NONE; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.NbData = 1; |
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if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) == HAL_OK) |
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{ |
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HAL_QSPI_Transmit(&hqspi, &sr, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); |
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} |
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W25QXX_Wait_Busy(); |
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} |
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/** 写使能 */ |
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void W25QXX_Write_Enable(void) |
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{ |
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W25QXX_CommandOnly(W25X_WriteEnable); |
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} |
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/** 写禁止 */ |
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void W25QXX_Write_Disable(void) |
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{ |
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W25QXX_CommandOnly(W25X_WriteDisable); |
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} |
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/** 读取指定地址、指定长度的数据(1-Line 标准读 0x03) */ |
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void W25QXX_Read(uint8_t *pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) |
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{ |
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QSPI_CommandTypeDef cmd = {0}; |
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if (NumByteToRead == 0) |
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{ |
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return; |
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} |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = W25X_ReadData; /* 0x03 */ |
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cmd.AddressMode = QSPI_ADDRESS_1_LINE; |
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cmd.Address = ReadAddr; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.DummyCycles = 0; |
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cmd.NbData = NumByteToRead; |
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if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return; |
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} |
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HAL_QSPI_Receive(&hqspi, pBuffer, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); |
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} |
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/** 页编程(≤256 字节,不跨页) */ |
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void W25QXX_Write_Page(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
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{ |
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QSPI_CommandTypeDef cmd = {0}; |
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if (NumByteToWrite == 0) |
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{ |
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return; |
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} |
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W25QXX_Write_Enable(); |
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W25QXX_Command_Base(&cmd); |
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cmd.Instruction = W25X_PageProgram; /* 0x02 */ |
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cmd.AddressMode = QSPI_ADDRESS_1_LINE; |
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cmd.Address = WriteAddr; |
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cmd.DataMode = QSPI_DATA_1_LINE; |
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cmd.DummyCycles = 0; |
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cmd.NbData = NumByteToWrite; |
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if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
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{ |
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return; |
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} |
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HAL_QSPI_Transmit(&hqspi, pBuffer, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); |
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W25QXX_Wait_Busy(); |
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} |
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/** 无校验写入:自动跨页,不检查/不擦除(调用方须保证目标区已擦除) */ |
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void W25QXX_Write_NoCheck(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
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{ |
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uint16_t pageremain = W25QXX_PAGE_SIZE - (WriteAddr % W25QXX_PAGE_SIZE); /* 本页剩余 */ |
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|
if (NumByteToWrite <= pageremain) |
|
|
|
|
|
{ |
|
|
|
|
|
pageremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
while (1) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_Write_Page(pBuffer, WriteAddr, pageremain); |
|
|
|
|
|
|
|
|
|
|
|
if (NumByteToWrite == pageremain) |
|
|
|
|
|
{ |
|
|
|
|
|
break; /* 写入结束 */ |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
pBuffer += pageremain; |
|
|
|
|
|
WriteAddr += pageremain; |
|
|
|
|
|
NumByteToWrite -= pageremain; |
|
|
|
|
|
|
|
|
|
|
|
if (NumByteToWrite > W25QXX_PAGE_SIZE) |
|
|
|
|
|
{ |
|
|
|
|
|
pageremain = W25QXX_PAGE_SIZE; |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
pageremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 带擦除的写入:自动跨页跨扇区,非 0xFF 区域先擦除再写 */ |
|
|
|
|
|
void W25QXX_Write(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
|
|
|
{ |
|
|
|
|
|
uint32_t secpos; |
|
|
|
|
|
uint16_t secoff, secremain, i; |
|
|
|
|
|
uint8_t *buf = W25QXX_BUFFER; |
|
|
|
|
|
|
|
|
|
|
|
secpos = WriteAddr / W25QXX_SECTOR_SIZE; /* 扇区地址 */ |
|
|
|
|
|
secoff = WriteAddr % W25QXX_SECTOR_SIZE; /* 扇区内偏移 */ |
|
|
|
|
|
secremain = W25QXX_SECTOR_SIZE - secoff; /* 扇区剩余空间 */ |
|
|
|
|
|
if (NumByteToWrite <= secremain) |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
while (1) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_Read(buf, secpos * W25QXX_SECTOR_SIZE, W25QXX_SECTOR_SIZE); /* 读出整扇区 */ |
|
|
|
|
|
|
|
|
|
|
|
/* 判断该区间是否全为 0xFF(无需擦除) */ |
|
|
|
|
|
for (i = 0; i < secremain; i++) |
|
|
|
|
|
{ |
|
|
|
|
|
if (buf[secoff + i] != 0xFF) |
|
|
|
|
|
{ |
|
|
|
|
|
break; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
if (i < secremain) /* 需要擦除 */ |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_Erase_Sector((uint32_t)secpos); |
|
|
|
|
|
for (i = 0; i < secremain; i++) |
|
|
|
|
|
{ |
|
|
|
|
|
buf[secoff + i] = pBuffer[i]; |
|
|
|
|
|
} |
|
|
|
|
|
W25QXX_Write_NoCheck(buf, secpos * W25QXX_SECTOR_SIZE, W25QXX_SECTOR_SIZE); |
|
|
|
|
|
} |
|
|
|
|
|
else /* 已擦除,直接写剩余区间 */ |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_Write_NoCheck(pBuffer, WriteAddr, secremain); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
if (NumByteToWrite == secremain) |
|
|
|
|
|
{ |
|
|
|
|
|
break; /* 写入结束 */ |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
secpos++; |
|
|
|
|
|
secoff = 0; |
|
|
|
|
|
|
|
|
|
|
|
pBuffer += secremain; |
|
|
|
|
|
WriteAddr += secremain; |
|
|
|
|
|
NumByteToWrite -= secremain; |
|
|
|
|
|
|
|
|
|
|
|
if (NumByteToWrite > W25QXX_SECTOR_SIZE) |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = W25QXX_SECTOR_SIZE; |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 整片擦除(等待时间较长) */ |
|
|
|
|
|
void W25QXX_Erase_Chip(void) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_Write_Enable(); |
|
|
|
|
|
W25QXX_Wait_Busy(); |
|
|
|
|
|
W25QXX_CommandOnly(W25X_ChipErase); |
|
|
|
|
|
/* 整片擦除最长可达约 250s,需用较长的轮询超时 */ |
|
|
|
|
|
W25QXX_WaitBusy_Timeout(250000U); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 扇区擦除,入参为扇区号(内部 ×4096 得到字节地址) */ |
|
|
|
|
|
void W25QXX_Erase_Sector(uint32_t Dst_Addr) |
|
|
|
|
|
{ |
|
|
|
|
|
uint32_t byte_addr = Dst_Addr * W25QXX_SECTOR_SIZE; |
|
|
|
|
|
QSPI_CommandTypeDef cmd = {0}; |
|
|
|
|
|
|
|
|
|
|
|
W25QXX_Write_Enable(); |
|
|
|
|
|
W25QXX_Wait_Busy(); |
|
|
|
|
|
|
|
|
|
|
|
W25QXX_Command_Base(&cmd); |
|
|
|
|
|
cmd.Instruction = W25X_SectorErase; /* 0x20 */ |
|
|
|
|
|
cmd.AddressMode = QSPI_ADDRESS_1_LINE; |
|
|
|
|
|
cmd.Address = byte_addr; |
|
|
|
|
|
cmd.DataMode = QSPI_DATA_NONE; |
|
|
|
|
|
cmd.NbData = 0; |
|
|
|
|
|
|
|
|
|
|
|
if (HAL_QSPI_Command(&hqspi, &cmd, HAL_QSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) |
|
|
|
|
|
{ |
|
|
|
|
|
return; |
|
|
|
|
|
} |
|
|
|
|
|
W25QXX_Wait_Busy(); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 等待 Flash 空闲:自动轮询状态寄存器 bit0(BUSY) 直至为 0 */ |
|
|
|
|
|
void W25QXX_Wait_Busy(void) |
|
|
|
|
|
{ |
|
|
|
|
|
/* 页编程 ≤3ms、扇区擦除 ≤400ms,默认 5s 超时足够 */ |
|
|
|
|
|
W25QXX_WaitBusy_Timeout(HAL_QSPI_TIMEOUT_DEFAULT_VALUE); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 进入掉电模式 */ |
|
|
|
|
|
void W25QXX_PowerDown(void) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_CommandOnly(W25X_PowerDown); /* 0xB9 */ |
|
|
|
|
|
HAL_Delay(3); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/** 退出掉电模式 */ |
|
|
|
|
|
void W25QXX_WAKEUP(void) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_CommandOnly(W25X_ReleasePowerDown); /* 0xAB */ |
|
|
|
|
|
HAL_Delay(3); |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
/* ===========================================================================
|
|
|
|
|
|
* STM32F4 等 经典 SPI 传输层 |
|
|
|
|
|
* =========================================================================*/ |
|
|
|
|
|
#elif defined(W25QXX_USE_SPI) |
|
|
|
|
|
|
|
|
#include "spi.h" |
|
|
#include "spi.h" |
|
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////
|
|
|
/* 带擦除写入用的扇区缓冲 */ |
|
|
//本程序只供学习使用,未经作者许可,不得用于其它任何用途
|
|
|
uint8_t W25QXX_BUFFER[4096]; |
|
|
//ALIENTEK STM32F429开发板
|
|
|
|
|
|
//W25QXX驱动代码
|
|
|
|
|
|
//正点原子@ALIENTEK
|
|
|
|
|
|
//技术论坛:www.openedv.com
|
|
|
|
|
|
//创建日期:2016/1/16
|
|
|
|
|
|
//版本:V1.0
|
|
|
|
|
|
//版权所有,盗版必究。
|
|
|
|
|
|
//Copyright(C) 广州市星翼电子科技有限公司 2014-2024
|
|
|
|
|
|
//All rights reserved
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
|
|
|
|
|
|
uint16_t W25QXX_TYPE=W25Q80; //默认是W25Q80
|
|
|
|
|
|
|
|
|
|
|
|
//4Kbytes为一个Sector
|
|
|
|
|
|
//16个扇区为1个Block
|
|
|
|
|
|
//W25Q80
|
|
|
|
|
|
//容量为1M字节,共有16个Block,256个Sector
|
|
|
|
|
|
|
|
|
|
|
|
uint8_t SPI2_ReadWriteByte(uint8_t TxData) |
|
|
uint8_t SPI2_ReadWriteByte(uint8_t TxData) |
|
|
{ |
|
|
{ |
|
|
uint8_t Rxdata; |
|
|
uint8_t Rxdata; |
|
|
HAL_SPI_TransmitReceive(&W25QXXSPI, &TxData, &Rxdata, 1, 1000); |
|
|
HAL_SPI_TransmitReceive(&W25QXXSPI, &TxData, &Rxdata, 1, 1000); |
|
|
return Rxdata; //返回收到的数据
|
|
|
return Rxdata; |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
//初始化SPI FLASH的IO口
|
|
|
/* 初始化 SPI FLASH 的 IO 口 */ |
|
|
void W25QXX_Init(void) |
|
|
void W25QXX_Init(void) |
|
|
{ |
|
|
{ |
|
|
uint8_t temp; |
|
|
uint8_t temp; |
|
|
|
|
|
|
|
|
SPI2_ReadWriteByte(0Xff); //启动传输
|
|
|
SPI2_ReadWriteByte(0xFF); /* 启动传输 */ |
|
|
|
|
|
W25QXX_CS(1); /* SPI FLASH 不选中 */ |
|
|
|
|
|
|
|
|
W25QXX_CS(1); //SPI FLASH不选中
|
|
|
W25QXX_TYPE = W25QXX_ReadID(); /* 读取 FLASH ID */ |
|
|
|
|
|
|
|
|
W25QXX_TYPE=W25QXX_ReadID(); //读取FLASH ID
|
|
|
if (W25QXX_TYPE == W25Q256) /* 4 字节地址模式 */ |
|
|
|
|
|
{ |
|
|
|
|
|
temp = W25QXX_ReadSR(3); |
|
|
|
|
|
if ((temp & 0x01) == 0) |
|
|
|
|
|
{ |
|
|
|
|
|
W25QXX_CS(0); |
|
|
|
|
|
SPI2_ReadWriteByte(W25X_Enable4ByteAddr); |
|
|
|
|
|
W25QXX_CS(1); |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
if(W25QXX_TYPE==W25Q256) |
|
|
/** 使能 4 字节地址模式 */ |
|
|
|
|
|
void W25QXX_4ByteAddr_Enable(void) |
|
|
{ |
|
|
{ |
|
|
temp=W25QXX_ReadSR(3); //读取状态寄存器3,判断地址模式
|
|
|
W25QXX_CS(0); |
|
|
if((temp&0X01)==0) //如果不是4字节地址模式,则进入4字节地址模式
|
|
|
SPI2_ReadWriteByte(W25X_Enable4ByteAddr); |
|
|
{ |
|
|
W25QXX_CS(1); |
|
|
W25QXX_CS(0); //选中
|
|
|
} |
|
|
SPI2_ReadWriteByte(W25X_Enable4ByteAddr);//发送进入4字节地址模式指令
|
|
|
|
|
|
W25QXX_CS(1); //取消片选
|
|
|
/* 读取状态寄存器 */ |
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
//读取W25QXX的状态寄存器,W25QXX一共有3个状态寄存器
|
|
|
|
|
|
//状态寄存器1:
|
|
|
|
|
|
//BIT7 6 5 4 3 2 1 0
|
|
|
|
|
|
//SPR RV TB BP2 BP1 BP0 WEL BUSY
|
|
|
|
|
|
//SPR:默认0,状态寄存器保护位,配合WP使用
|
|
|
|
|
|
//TB,BP2,BP1,BP0:FLASH区域写保护设置
|
|
|
|
|
|
//WEL:写使能锁定
|
|
|
|
|
|
//BUSY:忙标记位(1,忙;0,空闲)
|
|
|
|
|
|
//默认:0x00
|
|
|
|
|
|
//状态寄存器2:
|
|
|
|
|
|
//BIT7 6 5 4 3 2 1 0
|
|
|
|
|
|
//SUS CMP LB3 LB2 LB1 (R) QE SRP1
|
|
|
|
|
|
//状态寄存器3:
|
|
|
|
|
|
//BIT7 6 5 4 3 2 1 0
|
|
|
|
|
|
//HOLD/RST DRV1 DRV0 (R) (R) WPS ADP ADS
|
|
|
|
|
|
//regno:状态寄存器号,范:1~3
|
|
|
|
|
|
//返回值:状态寄存器值
|
|
|
|
|
|
uint8_t W25QXX_ReadSR(uint8_t regno) |
|
|
uint8_t W25QXX_ReadSR(uint8_t regno) |
|
|
{ |
|
|
{ |
|
|
uint8_t byte = 0, command = 0; |
|
|
uint8_t byte = 0, command = 0; |
|
|
switch (regno) |
|
|
switch (regno) |
|
|
{ |
|
|
{ |
|
|
case 1: |
|
|
case 1: command = W25X_ReadStatusReg1; break; |
|
|
command=W25X_ReadStatusReg1; //读状态寄存器1指令
|
|
|
case 2: command = W25X_ReadStatusReg2; break; |
|
|
break; |
|
|
case 3: command = W25X_ReadStatusReg3; break; |
|
|
case 2: |
|
|
default: command = W25X_ReadStatusReg1; break; |
|
|
command=W25X_ReadStatusReg2; //读状态寄存器2指令
|
|
|
|
|
|
break; |
|
|
|
|
|
case 3: |
|
|
|
|
|
command=W25X_ReadStatusReg3; //读状态寄存器3指令
|
|
|
|
|
|
break; |
|
|
|
|
|
default: |
|
|
|
|
|
command=W25X_ReadStatusReg1; |
|
|
|
|
|
break; |
|
|
|
|
|
} |
|
|
} |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(command); //发送读取状态寄存器命令
|
|
|
SPI2_ReadWriteByte(command); |
|
|
byte=SPI2_ReadWriteByte(0Xff); //读取一个字节
|
|
|
byte = SPI2_ReadWriteByte(0xFF); |
|
|
W25QXX_CS(1); //取消片选
|
|
|
W25QXX_CS(1); |
|
|
return byte; |
|
|
return byte; |
|
|
} |
|
|
} |
|
|
//写W25QXX状态寄存器
|
|
|
|
|
|
|
|
|
/* 写状态寄存器 */ |
|
|
void W25QXX_Write_SR(uint8_t regno, uint8_t sr) |
|
|
void W25QXX_Write_SR(uint8_t regno, uint8_t sr) |
|
|
{ |
|
|
{ |
|
|
uint8_t command = 0; |
|
|
uint8_t command = 0; |
|
|
switch (regno) |
|
|
switch (regno) |
|
|
{ |
|
|
{ |
|
|
case 1: |
|
|
case 1: command = W25X_WriteStatusReg1; break; |
|
|
command=W25X_WriteStatusReg1; //写状态寄存器1指令
|
|
|
case 2: command = W25X_WriteStatusReg2; break; |
|
|
break; |
|
|
case 3: command = W25X_WriteStatusReg3; break; |
|
|
case 2: |
|
|
default: command = W25X_WriteStatusReg1; break; |
|
|
command=W25X_WriteStatusReg2; //写状态寄存器2指令
|
|
|
|
|
|
break; |
|
|
|
|
|
case 3: |
|
|
|
|
|
command=W25X_WriteStatusReg3; //写状态寄存器3指令
|
|
|
|
|
|
break; |
|
|
|
|
|
default: |
|
|
|
|
|
command=W25X_WriteStatusReg1; |
|
|
|
|
|
break; |
|
|
|
|
|
} |
|
|
} |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(command); //发送写取状态寄存器命令
|
|
|
SPI2_ReadWriteByte(command); |
|
|
SPI2_ReadWriteByte(sr); //写入一个字节
|
|
|
SPI2_ReadWriteByte(sr); |
|
|
W25QXX_CS(1); //取消片选
|
|
|
W25QXX_CS(1); |
|
|
} |
|
|
} |
|
|
//W25QXX写使能
|
|
|
|
|
|
//将WEL置位
|
|
|
|
|
|
void W25QXX_Write_Enable(void) |
|
|
void W25QXX_Write_Enable(void) |
|
|
{ |
|
|
{ |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(W25X_WriteEnable); //发送写使能
|
|
|
SPI2_ReadWriteByte(W25X_WriteEnable); |
|
|
W25QXX_CS(1); //取消片选
|
|
|
W25QXX_CS(1); |
|
|
} |
|
|
} |
|
|
//W25QXX写禁止
|
|
|
|
|
|
//将WEL清零
|
|
|
|
|
|
void W25QXX_Write_Disable(void) |
|
|
void W25QXX_Write_Disable(void) |
|
|
{ |
|
|
{ |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(W25X_WriteDisable); //发送写禁止指令
|
|
|
SPI2_ReadWriteByte(W25X_WriteDisable); |
|
|
W25QXX_CS(1); //取消片选
|
|
|
W25QXX_CS(1); |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
//读取芯片ID
|
|
|
|
|
|
//返回值如下:
|
|
|
|
|
|
//0XEF13,表示芯片型号为W25Q80
|
|
|
|
|
|
//0XEF14,表示芯片型号为W25Q16
|
|
|
|
|
|
//0XEF15,表示芯片型号为W25Q32
|
|
|
|
|
|
//0XEF16,表示芯片型号为W25Q64
|
|
|
|
|
|
//0XEF17,表示芯片型号为W25Q128
|
|
|
|
|
|
//0XEF18,表示芯片型号为W25Q256
|
|
|
|
|
|
uint16_t W25QXX_ReadID(void) |
|
|
uint16_t W25QXX_ReadID(void) |
|
|
{ |
|
|
{ |
|
|
uint16_t Temp = 0; |
|
|
uint16_t Temp = 0; |
|
|
W25QXX_CS(0); |
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(0x90);//发送读取ID命令
|
|
|
SPI2_ReadWriteByte(0x90); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
SPI2_ReadWriteByte(0x00); |
|
|
@ -155,86 +540,79 @@ uint16_t W25QXX_ReadID(void) |
|
|
W25QXX_CS(1); |
|
|
W25QXX_CS(1); |
|
|
return Temp; |
|
|
return Temp; |
|
|
} |
|
|
} |
|
|
//读取SPI FLASH
|
|
|
|
|
|
//在指定地址开始读取指定长度的数据
|
|
|
|
|
|
//pBuffer:数据存储区
|
|
|
|
|
|
//ReadAddr:开始读取的地址(24bit)
|
|
|
|
|
|
//NumByteToRead:要读取的字节数(最大65535)
|
|
|
|
|
|
void W25QXX_Read(uint8_t *pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) |
|
|
void W25QXX_Read(uint8_t *pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) |
|
|
{ |
|
|
{ |
|
|
uint16_t i; |
|
|
uint16_t i; |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(W25X_ReadData); //发送读取命令
|
|
|
SPI2_ReadWriteByte(W25X_ReadData); |
|
|
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的,要发送最高8位
|
|
|
if (W25QXX_TYPE == W25Q256) |
|
|
{ |
|
|
{ |
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr) >> 24)); |
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr) >> 24)); |
|
|
} |
|
|
} |
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr)>>16)); //发送24bit地址
|
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr) >> 16)); |
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr) >> 8)); |
|
|
SPI2_ReadWriteByte((uint8_t)((ReadAddr) >> 8)); |
|
|
SPI2_ReadWriteByte((uint8_t)ReadAddr); |
|
|
SPI2_ReadWriteByte((uint8_t)ReadAddr); |
|
|
for (i = 0; i < NumByteToRead; i++) |
|
|
for (i = 0; i < NumByteToRead; i++) |
|
|
{ |
|
|
{ |
|
|
pBuffer[i]=SPI2_ReadWriteByte(0XFF); //循环读数
|
|
|
pBuffer[i] = SPI2_ReadWriteByte(0xFF); |
|
|
} |
|
|
} |
|
|
W25QXX_CS(1); |
|
|
W25QXX_CS(1); |
|
|
} |
|
|
} |
|
|
//SPI在一页(0~65535)内写入少于256个字节的数据
|
|
|
|
|
|
//在指定地址开始写入最大256字节的数据
|
|
|
|
|
|
//pBuffer:数据存储区
|
|
|
|
|
|
//WriteAddr:开始写入的地址(24bit)
|
|
|
|
|
|
//NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
|
|
|
|
|
|
void W25QXX_Write_Page(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
void W25QXX_Write_Page(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
{ |
|
|
{ |
|
|
uint16_t i; |
|
|
uint16_t i; |
|
|
W25QXX_Write_Enable(); //SET WEL
|
|
|
W25QXX_Write_Enable(); |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(W25X_PageProgram); //发送写页命令
|
|
|
SPI2_ReadWriteByte(W25X_PageProgram); |
|
|
if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的,要发送最高8位
|
|
|
if (W25QXX_TYPE == W25Q256) |
|
|
{ |
|
|
{ |
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr) >> 24)); |
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr) >> 24)); |
|
|
} |
|
|
} |
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr)>>16)); //发送24bit地址
|
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr) >> 16)); |
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr) >> 8)); |
|
|
SPI2_ReadWriteByte((uint8_t)((WriteAddr) >> 8)); |
|
|
SPI2_ReadWriteByte((uint8_t)WriteAddr); |
|
|
SPI2_ReadWriteByte((uint8_t)WriteAddr); |
|
|
for(i=0;i<NumByteToWrite;i++)SPI2_ReadWriteByte(pBuffer[i]);//循环写数
|
|
|
for (i = 0; i < NumByteToWrite; i++) |
|
|
W25QXX_CS(1); //取消片选
|
|
|
{ |
|
|
W25QXX_Wait_Busy(); //等待写入结束
|
|
|
SPI2_ReadWriteByte(pBuffer[i]); |
|
|
} |
|
|
} |
|
|
//无检验写SPI FLASH
|
|
|
W25QXX_CS(1); |
|
|
//必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!
|
|
|
W25QXX_Wait_Busy(); |
|
|
//具有自动换页功能
|
|
|
} |
|
|
//在指定地址开始写入指定长度的数据,但是要确保地址不越界!
|
|
|
|
|
|
//pBuffer:数据存储区
|
|
|
|
|
|
//WriteAddr:开始写入的地址(24bit)
|
|
|
|
|
|
//NumByteToWrite:要写入的字节数(最大65535)
|
|
|
|
|
|
//CHECK OK
|
|
|
|
|
|
void W25QXX_Write_NoCheck(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
void W25QXX_Write_NoCheck(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
{ |
|
|
{ |
|
|
uint16_t pageremain; |
|
|
uint16_t pageremain; |
|
|
pageremain=256-WriteAddr%256; //单页剩余的字节数
|
|
|
pageremain = 256 - WriteAddr % 256; |
|
|
if(NumByteToWrite<=pageremain)pageremain=NumByteToWrite;//不大于256个字节
|
|
|
if (NumByteToWrite <= pageremain) |
|
|
|
|
|
{ |
|
|
|
|
|
pageremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
while (1) |
|
|
while (1) |
|
|
{ |
|
|
{ |
|
|
W25QXX_Write_Page(pBuffer, WriteAddr, pageremain); |
|
|
W25QXX_Write_Page(pBuffer, WriteAddr, pageremain); |
|
|
if(NumByteToWrite==pageremain)break;//写入结束了
|
|
|
if (NumByteToWrite == pageremain) |
|
|
else //NumByteToWrite>pageremain
|
|
|
{ |
|
|
|
|
|
break; |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
{ |
|
|
{ |
|
|
pBuffer += pageremain; |
|
|
pBuffer += pageremain; |
|
|
WriteAddr += pageremain; |
|
|
WriteAddr += pageremain; |
|
|
|
|
|
NumByteToWrite -= pageremain; |
|
|
NumByteToWrite-=pageremain; //减去已经写入了的字节数
|
|
|
if (NumByteToWrite > 256) |
|
|
if(NumByteToWrite>256)pageremain=256; //一次可以写入256个字节
|
|
|
{ |
|
|
else pageremain=NumByteToWrite; //不够256个字节了
|
|
|
pageremain = 256; |
|
|
} |
|
|
} |
|
|
}; |
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
pageremain = NumByteToWrite; |
|
|
} |
|
|
} |
|
|
//写SPI FLASH
|
|
|
} |
|
|
//在指定地址开始写入指定长度的数据
|
|
|
} |
|
|
//该函数带擦除操作!
|
|
|
} |
|
|
//pBuffer:数据存储区
|
|
|
|
|
|
//WriteAddr:开始写入的地址(24bit)
|
|
|
|
|
|
//NumByteToWrite:要写入的字节数(最大65535)
|
|
|
|
|
|
uint8_t W25QXX_BUFFER[4096]; |
|
|
|
|
|
void W25QXX_Write(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
void W25QXX_Write(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) |
|
|
{ |
|
|
{ |
|
|
uint32_t secpos; |
|
|
uint32_t secpos; |
|
|
@ -242,95 +620,109 @@ void W25QXX_Write(uint8_t* pBuffer,uint32_t WriteAddr,uint16_t NumByteToWrite) |
|
|
uint16_t secremain; |
|
|
uint16_t secremain; |
|
|
uint16_t i; |
|
|
uint16_t i; |
|
|
uint8_t *W25QXX_BUF; |
|
|
uint8_t *W25QXX_BUF; |
|
|
|
|
|
|
|
|
W25QXX_BUF = W25QXX_BUFFER; |
|
|
W25QXX_BUF = W25QXX_BUFFER; |
|
|
secpos=WriteAddr/4096;//扇区地址
|
|
|
|
|
|
secoff=WriteAddr%4096;//在扇区内的偏移
|
|
|
secpos = WriteAddr / 4096; |
|
|
secremain=4096-secoff;//扇区剩余空间大小
|
|
|
secoff = WriteAddr % 4096; |
|
|
//printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用
|
|
|
secremain = 4096 - secoff; |
|
|
if(NumByteToWrite<=secremain)secremain=NumByteToWrite;//不大于4096个字节
|
|
|
if (NumByteToWrite <= secremain) |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
while (1) |
|
|
while (1) |
|
|
{ |
|
|
{ |
|
|
W25QXX_Read(W25QXX_BUF,secpos*4096,4096);//读出整个扇区的内容
|
|
|
W25QXX_Read(W25QXX_BUF, secpos * 4096, 4096); |
|
|
for(i=0;i<secremain;i++)//校验数据
|
|
|
for (i = 0; i < secremain; i++) |
|
|
|
|
|
{ |
|
|
|
|
|
if (W25QXX_BUF[secoff + i] != 0xFF) |
|
|
{ |
|
|
{ |
|
|
if(W25QXX_BUF[secoff+i]!=0XFF)break;//需要擦除
|
|
|
break; |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
if(i<secremain)//需要擦除
|
|
|
if (i < secremain) |
|
|
{ |
|
|
{ |
|
|
W25QXX_Erase_Sector(secpos);//擦除这个扇区
|
|
|
W25QXX_Erase_Sector(secpos); |
|
|
for(i=0;i<secremain;i++) //复制
|
|
|
for (i = 0; i < secremain; i++) |
|
|
{ |
|
|
{ |
|
|
W25QXX_BUF[i + secoff] = pBuffer[i]; |
|
|
W25QXX_BUF[i + secoff] = pBuffer[i]; |
|
|
} |
|
|
} |
|
|
W25QXX_Write_NoCheck(W25QXX_BUF,secpos*4096,4096);//写入整个扇区
|
|
|
W25QXX_Write_NoCheck(W25QXX_BUF, secpos * 4096, 4096); |
|
|
|
|
|
} |
|
|
}else W25QXX_Write_NoCheck(pBuffer,WriteAddr,secremain);//写已经擦除了的,直接写入扇区剩余区间.
|
|
|
else |
|
|
if(NumByteToWrite==secremain)break;//写入结束了
|
|
|
|
|
|
else//写入未结束
|
|
|
|
|
|
{ |
|
|
{ |
|
|
secpos++;//扇区地址增1
|
|
|
W25QXX_Write_NoCheck(pBuffer, WriteAddr, secremain); |
|
|
secoff=0;//偏移位置为0
|
|
|
} |
|
|
|
|
|
if (NumByteToWrite == secremain) |
|
|
pBuffer+=secremain; //指针偏移
|
|
|
{ |
|
|
WriteAddr+=secremain;//写地址偏移
|
|
|
break; |
|
|
NumByteToWrite-=secremain; //字节数递减
|
|
|
} |
|
|
if(NumByteToWrite>4096)secremain=4096; //下一个扇区还是写不完
|
|
|
else |
|
|
else secremain=NumByteToWrite; //下一个扇区可以写完了
|
|
|
{ |
|
|
|
|
|
secpos++; |
|
|
|
|
|
secoff = 0; |
|
|
|
|
|
pBuffer += secremain; |
|
|
|
|
|
WriteAddr += secremain; |
|
|
|
|
|
NumByteToWrite -= secremain; |
|
|
|
|
|
if (NumByteToWrite > 4096) |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = 4096; |
|
|
|
|
|
} |
|
|
|
|
|
else |
|
|
|
|
|
{ |
|
|
|
|
|
secremain = NumByteToWrite; |
|
|
|
|
|
} |
|
|
|
|
|
} |
|
|
} |
|
|
} |
|
|
}; |
|
|
|
|
|
} |
|
|
} |
|
|
//擦除整个芯片
|
|
|
|
|
|
//等待时间超长...
|
|
|
|
|
|
void W25QXX_Erase_Chip(void) |
|
|
void W25QXX_Erase_Chip(void) |
|
|
{ |
|
|
{ |
|
|
W25QXX_Write_Enable(); //SET WEL
|
|
|
W25QXX_Write_Enable(); |
|
|
W25QXX_Wait_Busy(); |
|
|
W25QXX_Wait_Busy(); |
|
|
W25QXX_CS(0); //使能器件
|
|
|
W25QXX_CS(0); |
|
|
SPI2_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
|
|
|
SPI2_ReadWriteByte(W25X_ChipErase); |
|
|
W25QXX_CS(1); //取消片选
|
|
|
W25QXX_CS(1); |
|
|
W25QXX_Wait_Busy(); //等待芯片擦除结束
|
|
|
W25QXX_Wait_Busy(); |
|
|
} |
|
|
} |
|
|
//擦除一个扇区
|
|
|
|
|
|
//Dst_Addr:扇区地址 根据实际容量设置
|
|
|
|
|
|
//擦除一个扇区的最少时间:150ms
|
|
|
|
|
|
void W25QXX_Erase_Sector(uint32_t Dst_Addr) |
|
|
void W25QXX_Erase_Sector(uint32_t Dst_Addr) |
|
|
{ |
|
|
{ |
|
|
//监视falsh擦除情况,测试用
|
|
|
|
|
|
//printf("fe:%x\r\n",Dst_Addr);
|
|
|
|
|
|
Dst_Addr *= 4096; |
|
|
Dst_Addr *= 4096; |
|
|
W25QXX_Write_Enable(); //SET WEL
|
|
|
W25QXX_Write_Enable(); |
|
|
W25QXX_Wait_Busy(); |
|
|
W25QXX_Wait_Busy(); |
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W25QXX_CS(0); //使能器件
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W25QXX_CS(0); |
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SPI2_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
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SPI2_ReadWriteByte(W25X_SectorErase); |
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if(W25QXX_TYPE==W25Q256) //如果是W25Q256的话地址为4字节的,要发送最高8位
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if (W25QXX_TYPE == W25Q256) |
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{ |
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{ |
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr) >> 24)); |
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr) >> 24)); |
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} |
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} |
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr)>>16)); //发送24bit地址
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr) >> 16)); |
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr) >> 8)); |
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SPI2_ReadWriteByte((uint8_t)((Dst_Addr) >> 8)); |
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SPI2_ReadWriteByte((uint8_t)Dst_Addr); |
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SPI2_ReadWriteByte((uint8_t)Dst_Addr); |
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W25QXX_CS(1); //取消片选
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W25QXX_CS(1); |
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W25QXX_Wait_Busy(); //等待擦除完成
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W25QXX_Wait_Busy(); |
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} |
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} |
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//等待空闲
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void W25QXX_Wait_Busy(void) |
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void W25QXX_Wait_Busy(void) |
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{ |
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{ |
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while((W25QXX_ReadSR(1)&0x01)==0x01); // 等待BUSY位清空
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while ((W25QXX_ReadSR(1) & 0x01) == 0x01); |
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} |
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} |
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//进入掉电模式
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void W25QXX_PowerDown(void) |
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void W25QXX_PowerDown(void) |
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{ |
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{ |
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W25QXX_CS(0); //使能器件
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W25QXX_CS(0); |
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SPI2_ReadWriteByte(W25X_PowerDown); //发送掉电命令
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SPI2_ReadWriteByte(W25X_PowerDown); |
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W25QXX_CS(1); //取消片选
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W25QXX_CS(1); |
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HAL_Delay(3); //等待TPD
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HAL_Delay(3); |
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} |
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} |
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//唤醒
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void W25QXX_WAKEUP(void) |
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void W25QXX_WAKEUP(void) |
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{ |
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{ |
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W25QXX_CS(0); //使能器件
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W25QXX_CS(0); |
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SPI2_ReadWriteByte(W25X_ReleasePowerDown); // send W25X_PowerDown command 0xAB
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SPI2_ReadWriteByte(W25X_ReleasePowerDown); |
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W25QXX_CS(1); //取消片选
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W25QXX_CS(1); |
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HAL_Delay(3); //等待TRES1
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HAL_Delay(3); |
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} |
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} |
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#endif |
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#endif /* W25QXX_USE_QSPI / W25QXX_USE_SPI */ |
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